Electric Radiator Calculator

The calculator gives the total minimum wattage needed to heat your room: choose one
radiator or mix and match smaller radiators to reach or exceed this figure.
Remember - for efficient, comfortable heating, It' s always better to have more wattage than less.

Step 1
of 3

Enter room dimensions

metresfeet

Width (m)Width (ft)

Length (m)Length (ft)

Step 2
of 3

Is the room north facing

Yes
No

Select your insulation type

Modern
Poor

Does the room have a staircase?

Yes
No

Step 3
of 3

Choose your region

Red
Yellow
Light Blue
Dark Blue

The radiator or radiators needed to heat your space should have a total wattage of at least:

All information and advice in relation to product suitability is for general guidance only… Read MoreRead Less

The Radiator Calculator assumes a maximum ceiling height of 2.7 metres and is designed to calculate the heating requirements of standard domestic living spaces. We recommended speaking to our heating advisors if you are looking to heat a room with high ceilings, large areas of glass, exceptionally high heat loss or an unusual shape or style. This includes conservatories, orangeries, garden rooms, garage conversions, hallways, stairways, landings, multi-storey rooms and workshops. You can call us or contact us online for a free, tailored quotation and expert advice.
Please Note:
All information and advice in relation to product suitability is for general guidance only. We cannot guarantee that any product is suitable for your requirements or that your electrical system has the capacity to power the products that you purchase from us. This is your responsibility and Electric Radiators Direct recommends that you seek the professional opinion of a qualified electrician before placing your order. Electric Radiators Direct shall have no obligation to accept the return of any product on expiry of the 30 Day No Quibble Money Back Guarantee